• This is what happened on my MacBook Pro, and I thought it was a Big Sur issue. Then I thought to try import music on my iMac and the same thing happened. I would have saved time re- and re-rebuilding my MBP had I tried this first. Oh well, I got a clean install anyway.
• Please subscribeHow to download and install iTunes in your MacBook run Big Sur os Download app link: https://www.mediafire.com/file/l388sm2iq6hombz/Retroact.
• Beta 8 of iOS 14.5, iPadOS 14.5, macOS Big Sur 11.3 Available for Testing - Apple Event Scheduled for April 20 - Beta 7 of macOS Big Sur 11.3 Available for Testing - Beta 7 of iOS 14.5 & iPadOS 14.5 Released for Testing - Beta 6 of iOS 14.5, iPadOS 14.5, macOS Big Sur 11.3 Available for Testing.
• Testing conducted by Apple in October 2020 on production 1.4GHz quad-core Intel Core i5-based 13-inch MacBook Pro systems with 8GB RAM, 256GB SSD, and prerelease macOS Big Sur. Systems tested with WPA2 Wi-Fi network connection while running on.

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Affected MacBook Pro users will receive a ‘Service Recommended’ message and will need to call to get a battery replacement for free. The full release notes of the 11.2.1 software can be viewed on Apple’s official website. MacOS Big Sur users can now download 11.2.1 by going to System Preferences, then Software Update.

What Should do Before Upgrading to macOS Big Sur?

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Although the every new macOS upgrade comes with certain exciting features, you need to know if your Mac computer can safely be updated (take Big Sur as an example). If you pay no attention to the details, macOS Big Sur update problems come with you for sure, probably your Mac update stuck or Mac failed update won't boot. Here are some of the things that you should look for before you upgrade to the new update.

1.Check compatibility. Big Sur requires any of the following Mac models: iMac; MacBook Pro; MacBook Air; MacBook; Mac Pro; Mac Mini.
2.Check minimum software and hardware requirements. You should have OS X Mountain Lion 10.8 or later. It requires at least 35.5GB of storage space to perform the Big Sur upgrade from macOS Sierra or later, 44.5GB from an earlier release.
3.Backup your Mac. To avoid any possible macOS Big Sur update problems, making a backup of your Mac comes essential. You can backup Mac with Time Backup Machine, iCloud, iTunes, or any other third-party Mac backup tools like MacX MediaTrans.